Anchor davit



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July 26, 1927.

B. M. SCHAUMAN ANCHOR DAVIT Filed July e. 192e s sheets-sheet 5 yikmumi 111 uiy .INVENTOR 9 BY W Y 6*'ro EY Patented July 26, 1927.

y narran als IBR-OR MAX SCHAUMAN, OF NEVI YORK, N. Y., ASSIGNOR T MARGARET WOOLMAN CANTWELL, OF NEXV YGRK, N. Y.

ANCHOR DAVIT.

Application led July 6,

This invention relates to anchor davits n and has tor its primary object to provide a simple and novel davit mechanism tor ships anchors which may be actuated from a suitable motor to cast or lower the anchor or to raise and stow the anchor on board of the deck.

It is one ot the prominent objects of the invention to provide improved means for positively locking the anchor and its .davit upon the deck of Athe vessel to prevent shifting movements thereof in rough seas. More particularly, in one embodiment. of the invention the davit is mounted upon a travelling carriage, and the shaft ot the anchor is provided with means at one end automatically cooperating with means on the davit when the anchor is raised whereby the anchor and the davit are locked together against a relative shitting movement.

1t is another object ot' the invention to provide a simple and etl'ective means automatically controlled by the davit carriage for engaging and disengagingv the anchor chain with the driving sprockets Aoil the mechanisn'i.

Si further object ot the invention is to provide latch means .tor locking the carriage against movement in its extended position and for automatically moving the anchor from a substantially horizontal posit-ion to a vertical position to be lowered, said anchor having means which automatically cooperates with saidlatch means when the anchor is lit'ted upon ship deck to release the carriage whereby the anchor and its davit may be drawn inwardly upon the deck ot the a ship. j

It is a further general object ot my invention to provide a ships anchor davit and operating means therefor which is relatively simple in its construction, positive and reliable in its operation and may be installed at compara-.tively small cost.

l.Vith the above and other objects in View, the invention consists in the improved anchor davit, and in the torni, construction and relative arrangement ot the several parts as will be lereinat'ter more fully described, illustrated in the accompanying drawings, and subsequently incorporated in the subjoined claims.

ln the drawings, wherein I have illustrated one simple and practical embodiment 192e. sei-iai No. 120,774.

ot' the invention, and in similar reference characters designate corresponding parts throughout the several views,-

Figure 1 is a top plan view illustrating one embodiment of my improved anchor davit and operating mechanism therefor;

Fig. 2 is a longitudinal section view taken substantially on the line 2 2 ot' Fig. 1; s

Fig. 3 is a similar sectional view showing the relative positions of the parts when the anchor is raised to a vertical position to be lowered; f

F ig. 4t is a view similar to Fig. 3 showing the positions of the parts as the anchor is lowered; i

F is a detail longitudinal section taken substantially on the line 5-5 of Fig. 1;

Fig. 6 is a transverse sectional view taken on the line 6`6 of Fig. l;

Figs. 7, 8 and 9 are detail views of dilierent parts of the mechanism, and

Fig'. 10 is a detail sectional view taken Asubstantially on the line 10-10 of Fig. 1.

Referring in detail to the drawings, 5 indicates a part ot the ship deck upon which there is suitably secured a longitudinally extendingbase plate 6 to the opposite edges of which channelled' guides 7 having upper and lower-inwardly projecting flanges 8 and i) respectively, are lsuitably secured. A carriage generally indicated at 10 is mounted to travel between these guides and is supported upon the `lower or base flanges 9 thereof. This carriage consists lgenerally of a metal plate of U-shaped form in cross section, the opposite side walls 11 of which contact at their upper edges against the inner edges ot the upper ianges 9 of the guides 7. To one of the walls 11 at one end of the carriage, an arm l2 is fixed and projects outwardly through a longitudinal slot 13 in the adjacent guide member 7, the outer end of said arm being provided with a suitably formed nut 14 for meshing engagement with a worm 15A provided on the shafty 16 which is journalled at its forward end vin a suitable bearing 17. The rear endof this shai'it is supported in the bearing bracket 18 and provided with a worm 19 which meshes with the worm gear 20 on a transversely positioned shaft 21 yupon which suitable chain engaging sprocket members '2.2 are fixed. The shaft l16 may be directly driven by a suitable motor 23 or connected with the motor shaft through intermediate gearing as indicated at 24;, whereby the shaft will be driven at the required speed.

At one end of the worm 15, a collar 2 5 is loosely engaged on the shaft 16 andis yieldingly urged against the end of the Worm by a coil spring 26.

Upon the inner end of the carriage 10 a guide sheave 27 for the anchor chain 28 1s suitably mounted. The anchor chain passes under this guide sheave and is connected to an eye or loop member 8O fixed in the end of the anchor shaft 29. The intermediate portion of this eye or loop 30 which is generally of cylindrical form is provided with diametrically projecting lugs 31 (see Figs. 8 and 9) for engagement in notches or recesses 82 provided in the head 34 of the davit member 33. This davit member may be formed `from a pressed or stamped sheet metal plate and is of general channel shape in cross section, the side walls of the head 34: being provided with laterally projecting tapering extensions 35. In this head portion of the davit a guide sheave 36 tor the anchor chain is mounted.

The davit at its other end is supported for pivotal Ymovement upon the transverse rod or pin 37 extending between the upwardly projecting arms 38 formed on the carriage walls 11 at their forward ends, said latter end of' the davit terminating in an angu larly projecting arm 39 in which pins 40 are fixed. At the opposite side of the pivot rod 37, the davit is formed with a shoulder 41 and at aV point longitudinally spaced from this shoulder, additional pins 42 are fixed to the davit.

The head 13 of the anchor which is suit ably connected to the .end of the shaft 29 is adapted to besupported upon a plate 14 and at one oit its ends is provided with spaced arms between which the pivoted end of the davit- 33 is disposed, said arms being also pivotally engaged upon the rod 67 as clearly shown in Fig, 3 of the drawings. These arms are provided with longitudinal extensions or lingers l5 adapted to cooperate with the respective pins 42.

In addition 'to the davit 33 and the plate 414i a yoke member 16 has its arms pivotally mounted upon the rod 37 adjacent one of their ends, said yoke arms being received within the channel of the davit 33 as indicated in Fig. 2 of the drawings. These yoke arms at one of their ends are provided with s eats or notches 47 adapted to receive the pins 410 on the angular projection 39 of the davit member'. The yoke arms at their other ends support the guide sheave 48 for the anchor` chain and are provided with terminal projections 49 by which the chain is directed into engagement upon said sheave.

Between the base of the carriage 10 and a guide plate 50 fixed thereon a plate 51 is ar ranged for longitudinal sliding movement independ-ently of the carriage. The guide plate 5 which has a central longitudinally .extending slot 52 therein receiving the head of a stud 53 iixed in the sliding plate 51 whereby the Jforward sliding movement of said plate is limited. This plate at its torward end has an upwardly extending obliquelyinelined section 54, said sect-ion of the plate having an in .ei-mediate angularly offset portion 55. This section eil of' the plate is provided with a central longitudinally extending slot 56 therein, the outer end of which is enlarged or provided with lateral extensions indicated at 57 for the purpose of permitting the passage of the eye or loop 30 on the end of the anchor shaft 29 therethrough. Y

For the purpose of locking the carriage 10 against movement after the anchor and its davit have been lifted' to the vertical posi tion shown in Fig. 3 of the drawings, I provide a latch dog 58 pivotally mounted at one of its ends as Vat 59 on the outer side of one of the carriage walls 11 (see Fig. 10), said dog being yieldingly urged by a suitable leaf spring 60 and at its free end having a locking stud or projection 61 which is adapted to engage in the notch or recess 62 provided. vin the upper flange 8 of one oi' the guide membersI 7. A similar notch is also provided in the corresponding flange et the other guide member, and these notches are adapted to receive the opposite ends of the shaft or axis 63 of the guide sheavc 86 mounted in the head of the davit 63. ln the sliding movement of the carriage 10, these pins are engaged against the under sides of the upper flanges 8 ot the guide members 7, and thereby retain the davit and the anchor shaft in a substantially horizont-al position.

On the base plate 6 at its forward end in advance of the carriage guide 7 a bracket 64 is fixed, the upstanding arms of said bracket being provided in their upper ends with notches or seats 65 to receive the pivot rod 37. A transversely projecting stud 66 is fixed in each of these arms. Adjacent to each of the bracket arms, a stop member' 67' is suitably secured to the base plate 6, and with these stops, the shoulders fil on the pivot-ed end of the. davit member 38 are adapted to coact as indicated in Fig. 7 of the drawings.

Upon the transverse shaft 21, the arms of a guide yoke 68 which straddles the sprockets 22 are loosely engaged. This yoke is actuated through the link connection 65) pivoted at one end to the yoke and at its other end to the end ot a lever 70 which is fulcrumed adjacent said end thereof upon a bracket member 71 secured on the base 6. An adjustable weight 72 is carried by this lever and provides the gravity means for holding said lever and consequently the yoke Sli member 68 in one position. To the rear end of one of the side walls 1l of the carriage a longitudinally extending arm 73 is fixed and carries a pin or stud 74 adapted for engagement in the open-ended longitudinal slot 75 provided in the end of the lever 70. Between the rear ends of the carriage guides 7, a supporting standard 7 (S is lined upon the base 6 and on the upper end of this standard, a. plate 77 is pivotally mounted at one of its ends as at 78, the other or free end of said plate being bifurcated or slotted as at 77 to receive the anchor chain 28. The yoke member 66 on one side thereof is provided with a stud 79 adapted to engage the curved upper end of an arm SO fixed on the base 6 which constitutes a stop limiting the movement of lever 70 to the position shown in Fig. of the drawings.

Additional sprockets Sl are secured upon the shaft 2O with which an additional chain is adapted to be engaged and connected with a second anchor, if such an additional anchor is necessary. A yoke S2, similar to the yoke member 66 above referred to is associated with the sprocket 8l and is adapted to be manually operated through the me dium of the link 84 connected with lever 83 to disengage the chain from the sprocket 8l, or permit of its engagement therewith.

In the operation of the mechanism above described, assuming that the anchor and its davit are positioned upon 'the deck as seen in Fig. 2 of the drawings, and it is desired to ship or cast the anchor, current is supplied to the operating motor to drive the shaft 16 in the proper direction so that carriage is moved outwardly in its guides by means of the worm 15. At the start of this movement of the carriage, the weighted lever 70 is thrown overto the position shown in F ig. 3 of the drawings by the stud 74 on the arm 73, said stud moving out of the slot 75 in the lever. The. chain 28 is thus lowered into engagement with the teeth of the sprockets 22 so that as the carriage continues to travel outwardly, the chain is positively' drawn upwardly and forwardly by the sprockets. In this travel of the carriage, the ends of the rod or axis for the guide sheave mounted in the end of the davit being engaged beneath the upper walls of the carriage. guides, prevents upward swinging movement of the davit yunder the weightof the anchor head. Vhen, however, these pins come into alignment with the notches or recesses 62 in the flanges of the guides, the ends of the pin move upwardly therethrough and under the weight of the anchor the davit is swung upwardly to the substantially vertical position shown in Fig. 3 of the drawings. This upward movement of the davit is initiated b v the engagement of the shoulders 4l on the pivoted end of the davit with the stops 67 on the arms of the bracket G4.

lthe pin or axis of the As the davit moves upwardly to the perpendicular position, the pivot axis 37 therefor on the end of the carriage comes into engagement with'the notches or seats 65 in the bracket arms. Simultaneously, the latch dog 5S is forced upwardly and its free end en gaged in the notch 62 in the liange 8 of one of the carriage guides, thuspositively locking the carriage against any further sliding movement. f

In the continued operation of the shaft 1G, the chain is paid out and the davit 33 is swung' outwardly and downwardly by the gravity pull of the anchor to a substantially horizontal position until the pivoted end thereof engages the stop pins 66 on the bracket 64. In this position of the davit, it will be observed that the "rectangular parts of the end ofthe loop of the anchor shaft 36 maymove through'the entrances to the recesses 32 in the end of the davit 33 so that the anchor may freely drop as the chain is paid out. In this movement of the davit-v member to the horizontal position, the pins 40 on the pivoted end thereof kengage in the seats 47 in the arms of the yoke member 4G and raise this member to a vertical position, as shown in Fig. 4, to support the chain in an elevated position above the davit.

As the shaft of the anchor moves downwardly through the slot 5G in the obliquely disposed end portion ofthe slide plate 5l, sheave mounted in the end of the davit exerts a camming action against the angularly offset intermediate portion of said oblique end of the 'slide plate and thereby continues to move vsaid slide plate outwardly independently of the carriage. Of course it is understood that in this downward swinging movement of the davit, the plate 72 which supports theanchor head in the horizontal position, also swings freely upon the pivot rod or axis 37 in the end of the carriage to a substantially vertical position.

In returning the anchor to its normal position upon the deck of the vessel, the operation of the motor is reversed. The chain 28 is thus drawn inwardly over the several guide sheaves and sprockets and the anchor is pulled upwardly until the end of the loop 30 engages in the notches in the head of the davit 33. Thereafter, the davit will be swung upwardly from the. horizontal position shown in F ig. 3 to a substantially perpendicular position, the anchor shaft moving upwardly through the slot 56 in the end section 54 of the plate 5l and by gravity pressure forcing this plate inwardly upon the carriage. In the continued pull on the chain, the davit is swung vinwardly and downwardly from the perpendicular position and thepins 42 engage the extensions or fingers on the arms of plate 44 and lill] i of the anchor the fingers or thereby swing this plate upwardly to a horizontal position beneath the head of the anchor. As the davit member is thus moved inwardly and downwardly to a horizontal position on the carriage, the ends of' the shaft or axis 63 of the sheave 3G move downwardly through the notches or recesses 62 in the guide flanges and below the plane of said flanges, one end of said axis coacting with the latch dog 58 to move the `same to its released position, so that the carriage may thus move inwardly in the guides. lt will be understood that when the carriage reaches the limit of its outward movement, the nut 14 fixed thereto is disengaged from the worm l5. However, after the latch means has been actuated and the carriage released as just explained, the continued pull of the chain causes said nut to be en gaged with the end of the worm, so that in the rotation of said worm, the carriage with the davit and the anchor supported thereon move inwardly over the deck of the vessel. As noted, in this position of the parts, the davit is securely locked or held against any pivotal n'iovement upon the outer end of the carriage, and the pins or studs 42 on the davit being engaged with extensions Ll oit' the plate 4l, therefore prevent any gravity movement head relative to the davit. Since the shaft of the anchor is locked in connection with the other end of the davit by the engagement of the rectangular sections of the loop 33 in the notches or recesses 32 with their longer dimensions at right angles to the narrow entrances to these recesses, it becomes apparent that the boom and the anchor are securely locked and held against any possibility of relative movement.

As the carriage l() approaches the end of its inward movement, the pin or stud 74 enters the slot 75 in the lever Z0 and throws this lever over beyond the perpendicular position, from which its movement is continued by gravity to the position shown in Fig. 2 of the drawings, thus swinging the yoke member 68 upwardly and lifting the chain 28 out of engagement with the sprockets 22.

From the above description it will be seen that the mechanism for casting the anchor by the proper movements of the davit and for returning the anchor to its normal position upon the ships deck is entirely automatic and no other manual operation is required than the manipulation of the .switch controlling the supply of current to the operating motor. By mounting the davit upon a travelling carriage, the movement of the davit to its projected position from the deck of the vessel is in a straight horizontal line combined with the gravity action of the anchor itself which effects the final swinging or pivotal movement of the davit with respect to the carriage. The several essential parts of this mechanism are of very rugged construction so that it is not liable to get out of order and require frequent repairs. Also, it will be noted that the arrangement of the several cooperating parts is very compact so that the mechanism as a whole will occupy a minimum ofthe deck space on the vessel. lt will, of course, be understood that the operating mot-or and most of the drive gearing might be conveniently mounted or arranged in the hold of the vessel. The particular arrangement which happens to be illustrated in the drawing of this means for transmit-ting movement to the sliding carriage is of course not an essential requisite so far as the fundamental and novel features of my present improvements are concerned. In addition, it is to be understood that the form and construction of the sliding carriage, the anchor davit and the several other cooperating` elements may also be susceptible of embodiment in various other alternative forms. Accordingly, the privilege is reserved of resortingto all such legitimate changes in the form of construction and relative arrangement of Athe various parts as may be fairly incorporated within the spirit and scope of the invention as claimed.

What I claim is:

l. In combination, a carriage mounted for horizontal travel upon the deck of a vessel, a davit pivotally supported at one of its ends on said carriage, a sheave mounted in the other end of the davit, an anchor, and a flexible element trained over the sheave and connected with said anchor, means for locking the davit against tilting movement on the carriage during the travelling movements of the carriage but releasing the davit at the end of the movement of the carriage :in one direction, means controlled by the weight of the anchor when the davit is released fo-r pivotal movement to swing the davit upon the carriage to a horizontally eX- tended position with respect thereto, means for actuating the carriage, and means for operating said flexible element to lower and raise the anchor relative to the davit.

2. 1n combination, a carriage mounted upon a ship deck for horizontal travelling` movement, a davit pivotally supported at one of its ends upon said carriage, means for locking the davit against pivotal movement during the travel of the carriage and for releasing the davit from such pivotal movement at the end of the outward movement of the carriage, a sheave mounted in the davit, a flexible element trained over said sheave, an anchor connected with said flexible element, a member pivoted in the carriage and sustaining the weight of the anchor in the travelling movement of the carriage, andsaid member in the davit having cooperating parts whereby, upon the releasing of the davit, the gravity weight of the anchor effects an outward swinging movementl of the davit to a horizontally extended position with respect to the carriage, and means for actuating said carriage.

3. In combination, a carriage mounted upon a ship deck for horizontal travelling movement, a davitv pivotally supported at one of its ends upon said carriage, means for locking the davit against pivotal movement during the travel of the carriage and for releasing the davit from such pivotal movement at the end of the outward movement of the carriage, sheave mounted in the davit, a flexible element trained over said sheave, an anchor connected wit-h said flexible element, a member pivoted in the carriage and sustaining' the weight of the anchor in the travelling movement ofl the carriage, and said member in the davit having cooperating` parts whereby, upon the releasing of the davit, the gravity weight of the anchor .effects an outward swinging' movement of the davit to a horizontally extended position with respect to the carriage, a latch device for locking the carriage against movement at the end of its outward travel, and said locking means for the davit including a part coacting with said latch device when the davit is returned to its normal position on the carriage whereby the carriage is released for inward sliding movement, and means for actuating said carriage.

4. In combination, spaced guides secured upon the deck of a vessel, a carriage mounted to travel between said guides, a davit pivotally supported at one of its ends in said carriage for swinging movement to and from a position insuperposed relation to the carriage, a sheave mounted in the free end ot the davit, an anchor, a flexible element ytrained over said sheave and connected with the anchor, said davit havin-g means cooperating with the guides to prevent pivotal swinging movement of the davit in the itravel of the carriage and said means disengageable from the guides at the end of the outward travel of the carriage, a member pivotally mounted in the carriage and sustaining the weight of the anchor co-acting with means on the davit when the latter is released to swing said davit to a horizontally extended position relative to the carriage, means for actuating said carriage, and means for paying` out and taking up the flexible element to lower and raise the anchor.

5. In combination, spaced guides secured upon the deck of a vessel, a carriage mounted to travel between said guides, a davit pivotally supported at one of its ends in said carriage for swinging movement to and from a position in superposed relation to the carriage, a sheave mounted in the freeend of means on the davit at the the davit, an anchor, va flexible element trained over said sheave and connectedwith the anchor, said davit having means cooperating with the guides to prevent pivotal swinging movement of the davit in the travel of the carriage and said means disengageable from the guides atthe end of the outward travel-of the carriage, a member pivotally mounted' in the carriage and sustainingthe weight of the anchor co-acting with means on the davit when the latter is released to swing said davit to a horizontally extended position relative to the carriage, means for actuating said carriage,l means for paying out and 'taking up `the flexible element to lower and raise the anchor, and means controlled by means on the carriage for disengaging said flexibley element from the take-up means therefor when the carriage reaches the limit. of its inward-movement.

6. In combination, spaced guides secured upon the deck of a vessel, a carriage mounted to travel in said guides, a davit pivotally supported at one of its ends insaid carriage f tor swinging movement from a position in superposed relation to the carriage toa horizontally extended position, lat-ch means on the carriage cooperating with one ot said guides to limit the outward travel of the carriage, a sheave mountedinthe davit at its free end, a fiexible element` trained over the sheave and an anchor connected to Said flexible element, a member pivotally mounted in the carriage sustainingthe weight of theanchor and co-acting withmeans on the davit -at the end of the outward travel of the carriage to swing .the davit upwardly and outwardly tok its extended position, a part on said davit. cooperating with the latch means to release the carriage when the davit is returned to its norm-al positionon the carriage, and means for actuating said carriage. Y Y y 7. In combination, spaced guides secured upon the deck' of a vessel,l a carriage mounted to travel in said guides,"a davit pivotally supported at one of its ends in said carriage for swinging movement from a position in superposed relation to the carriagev to a horizontally extended position, latch means on the carriage cooperating with one of said guides to limit the outward travel of the carriage, a sheave mounted in the davit at its free end, a flexible element trained over the sheave and an anchor connected to said flexible element, a member pivotally mounted in the carriage sustaining the weight of the anchor and co-acting with end of the upward travel of the carriage to swing the davit upwardly and outwardly to its extended position, apart on said davit cooperating with the latch means to release the carriage when the davit is returned to its norvals mal' position ,on the carriage, means for actuating said carriage, said part on the davit also `co-acting with said guides in the traveling movement ot the carriage to prevent the pivotal movement of the davit with respect to the carriage.

8..'In combination, spaced guides secured 'upon the deck of `a vessel, a carriage mounted to travel in saidguides, a davit pivotally supported at one of its ends in said Vcarriage for *swinging movement -trom a position in superposed relation to the carriage to a horizontally extended position, latch means on the carriage cooperating with one ot said guides to limit the outward travel ot the carriage, a sheave mounted in the davit at its 'tree end, a flexible element trained over the sheave andan anchor connected to: said flexible element, a member pivot-ally mounted in the carriage sustaining the weight of the anchor and co-acting with `means on the davit at the end ot the upward `travel of the carriage to swing the davit upwardly and outwardlyto its extended position, a part on said davit cooperating with the latch means to release the carriage when the davit is returned to its normal position on the carriage, means for actuating said carriage, said part on the davit `also co-acting Awith said guides in the travelling movement of the carriage to prevent the' pivotal movement of the davit with respect to the carriage, means for paying out and taking up the flexible element to lower and raise the anchor, and said anchor and thedav'it havco-acting parts locking the davit and anchor together when the davit is insuperposedrelation to the carriage and automatically releasing the anchor for gravity movement when the'davit is in its extended position.

9. `In combination, spaced guides secured upon the declr of Va vessel, a carriage mounted to travel in said guides, a davit `pivotally supported at one of its ends in said p carriage for swinging movement Itrom a `position in superposed relation to the carriage to a horizontally extended position, latch means on the carriage cooperating with one et said guides to limit the outward travel ot the carriage, a sheave mounted in the davit at its lree end, a iiexible element trained over the sheave and an anchor connected to said iiexible element, a member pivotally mounted. in the carriage sustaining the weight' ot the anchor and co-acting with means on the davit at the end of the upward travel ot' the carriage. to swing the davit upwardly and outwardly to its extended position, a part on said davit cooper.- ating with the latch means to release the carriage when the davit is returned to its normal position on the carriage, means tor actuating said carriage, said part on the davit also coacting with said. guides in the travelling movement of the carriage to prevent the pivotal movement of the davit with respect to the carriage, means tor paying out and taking up the flexible element to lower and raise the anchor, and said anchor andthe davit having Vco-acting parts locking the davit and anchor together when the davit is in superposed relation to the carriage and automatically releasing the anchor for gravity moven'ient when the davit is in its extended position, and a plate slidably mounted i'or longitudinal movement relative to the carriage having a slotted cam extension at one of its ends the slot thereof receiving the 're'e end of the davitand a partot the davit cooperating with the lcam extension to slide the plate outwardly-relative to the carriage, and the anchor shaft moving through said slot as the davit is `swung upwardly and vinwardly towards its normal posit-ion, and the gravity pressure o 't the anchor moving said slide plate inwardly. relative to the carriage. K

In testimony that l claim the Jforegoing as my invention, I have signed my name hereto.

mios Max sci-iraniana.` 

